Remove local copy of jquery-min, and link to the system file instead.
Remove local minimized copies of modernizr and HTML5 shiv.
Instead add link to system modernizr which includes HTML5 shiv.
Update base template to reflect this change.
Merge branch 'master' of https://github.com/NickDaly/Plinth into replace-minified-js
Change DocumentRoot in apache configuration, and add permissions for /static.
Remove local JavaScript; Add /static permissions.

Changes:
1. Remove local minified copies of html5shiv, modernizr, and jquery.
2. Add symlinks to system copies of minified modernizr and jquery. These are installed by libjs-modernizr and libjs-jquery.
3. In apache configuration, change DocumentRoot from plinth/static to just plinth.
4. Add permissions for /static location.